Try the below mentioned steps to isolate the problem:

1. Power on/Restart the computer and then start tapping the F2 key when Dell Logo appears, the machine will enter System Setup.

2. On the first page that appears see if there is a Hard Drive listed next to Fixed HDD.

3. If the Hard Drive is not listed press F9 key and Load the BIOS Defaults and then restart the computer.

4. If you again get the Hard Drive not detected message, take a technician's help to reseat the Hard Drive(if you wish to do it yourself you can refer to the service manual: http://support.dell.com/support/edocs/systems/insN5110/en/sm/pdf/om_en.pdf)

5. After reseating if the Hard Drive is not detected again, you need to replace the Hard Drive.

6. If the Hard Drive is listed in Step 2, run Dell 32 bit Diagnostics on the machine (for more details on how to run the diagnostics check the User's Manual page http://support.dell.com/support/edocs/systems/insN5110/en/sg/sg_en.pdf)

7. If the diagnostics comes up with an error code, do reply to this post with the exact error code you get.

Regards,

Adrian

System Admin | CloudDesktopOnline

Welcome to the Dell Community  @Delwar masum 

To better assist you, the members would need the exact model number of your laptop/desktop???

Also please include the model number of your HDD.

Identify your Dell:

https://www.dell.com/support/contents/us/en/04/category/product-support/self-support-knowledgebase/locate-service-tag?dgc=SM&cid=226210&lid=spr2429124398&linkId=69606563

Best regards,

U2

PLEASE DO NOT POST ANY SERVICE TAGS!!!

Hi,

In bios sometimes it detects hard drive and sometimes not.

Inspiron 15 3000 series

8Z0KL52

Error code : 2000-0151

Validation: 98663

Error code : 2000-0151

Validation: 98663

Intel UNDI, PXE-2.1 (build 083) Copyright (C) 1997-2000 Intel Corporation

This Product is covered by one or more of the following patents: US6,570,884, US6,115,776 and US6,327,625

Realtek PCIe FE Family Controller Series v1.34 (18/87/13) PXE-E61: Media test failure, check cable

PXE-MOF: Exiting PXE ROM.

No Boot Device Found. Press any key to reboot the machine